I have a 3 year old Toshiba Model 46H84 Projection TV. The painters moved and disconnected it from the wall. when we reconnected , the problems came up. The picture is there, but along with it tthe screen has dark vertical bars spaced about an inch apart. also the horizontal lines are intermitantly wavey. I did a factory restore from the picture menu. also I did the touch focus several times.
Any advice appreciated.
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Projection TV sets have three tubes - red - blue - green and they don't fail often...they are located inside the tv
DLP TV sets use a single bulb and a clot wheel to make the three colors display...DLP bulbs do fail about every two years and will need o be replaced. Replacements can be found at www.TvRepairKits.com and its located behind a small door on the rear of the tv.
I have the same exact problem...for a few weeks the TV would turn off and the red power light would blink. Then the other day I started having exactly the problem you describe...green screen for a few seconds and then total shutdown.
Yes!!! You need to open the case, then remove the board from the unit, then check all the circuit, probably there's damaged circuit connections, use soldering iron to fix this problem....
I have a Toshiba 46h84 with similar problem that needs a new green crt. Mine does not have a cooling fan. I don't know if having a cooling fan would help the problem, but mine didn't come with one. There are rear projection TV's that have bulbs in them that require a fan. This particular model uses a red, a green, and a blue crt to generate the picture and probably doesn't need one.
The only thing I could recommend is to return the board and get the right board. open the set and get the part number on the board itself. You cannot modify a set to work things it was not designed for without reprogramming the microprocessor. Good Luck
let you know later
thanks I did
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